{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T03:27:07Z","timestamp":1790047627495,"version":"4.0.1"},"reference-count":52,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T00:00:00Z","timestamp":1712793600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Bulgarian national recovery and resilience plan","award":["BG-RRP-2.004-0002-C01"],"award-info":[{"award-number":["BG-RRP-2.004-0002-C01"]}]},{"name":"Bulgarian national recovery and resilience plan","award":["H\u0418C-\u0411-1290\/19.10.2023"],"award-info":[{"award-number":["H\u0418C-\u0411-1290\/19.10.2023"]}]},{"name":"Development, Exploitation Properties and Application of Eco-Friendly Wood-Based Composites from Alternative Lignocellulosic Raw Materials","award":["BG-RRP-2.004-0002-C01"],"award-info":[{"award-number":["BG-RRP-2.004-0002-C01"]}]},{"name":"Development, Exploitation Properties and Application of Eco-Friendly Wood-Based Composites from Alternative Lignocellulosic Raw Materials","award":["H\u0418C-\u0411-1290\/19.10.2023"],"award-info":[{"award-number":["H\u0418C-\u0411-1290\/19.10.2023"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Lignin is the natural binder in wood and lignocellulosic plants and is regarded as the main natural and renewable source of phenolic compounds. Its incorporation in the composition of fiberboards will enhance both the environmental performance of the panels and the complex use of natural resources. In recent years, the increased valorization of hydrolysis lignin in value-added applications, including adhesives for bonding fiberboard panels, has gained significant research interest. Markedly, a major drawback is the retention of lignin in the pulp until the hot-pressing process. This problem could be overcome by using a small content of phenol\u2013formaldehyde (PF) resin in the adhesive mixture as an auxiliary binder. The aim of this research work was to investigate and evaluate the effect of the hot-pressing temperature, varied from 150 \u00b0C to 200 \u00b0C, in a modified hot-press cycle on the main physical and mechanical properties of fiberboard panels bonded with unmodified technical hydrolysis lignin (THL) as the main binder and PF resin as an auxiliary one. It was found that panels with very good mechanical properties can be fabricated even at a hot-pressing temperature of 160 \u00b0C, while to provide the panels with satisfactory waterproof properties, it is necessary to have a hot-pressing temperature of at least 190 \u00b0C.<\/jats:p>","DOI":"10.3390\/polym16081059","type":"journal-article","created":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T07:09:28Z","timestamp":1712819368000},"page":"1059","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Effect of Hot-Pressing Temperature on the Properties of Eco-Friendly Fiberboard Panels Bonded with Hydrolysis Lignin and Phenol\u2013Formaldehyde Resin"],"prefix":"10.3390","volume":"16","author":[{"given":"Ivo","family":"Valchev","sequence":"first","affiliation":[{"name":"Faculty of Chemical Technologies, University of Chemical Technology and Metallurgy, 1757 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5111-8760","authenticated-orcid":false,"given":"Viktor","family":"Savov","sequence":"additional","affiliation":[{"name":"Faculty of Forest Industry, University of Forestry, 1797 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivaylo","family":"Yordanov","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Technologies, University of Chemical Technology and Metallurgy, 1757 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8347-7039","authenticated-orcid":false,"given":"Stoyko","family":"Petrin","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Technologies, University of Chemical Technology and Metallurgy, 1757 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3837-5380","authenticated-orcid":false,"given":"Petar","family":"Antov","sequence":"additional","affiliation":[{"name":"Faculty of Forest Industry, University of Forestry, 1797 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,11]]},"reference":[{"key":"ref_1","unstructured":"FAO (2024, February 04). 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